Scan the promotion code of Guilin Wal-Mart and enter the red Wal-Mart store in JD.COM to place an order. Why is it only delivered in the same city?

Scan the promotion code of Guilin Wal-Mart and place an order in JD.COM Wal-Mart Shopping Center. Only delivery in the same city is because Wal-Mart has goods in the same city warehouse. After a consumer orders a product on the JD.COM platform, if the system determines that the delivery of the product from a Wal-Mart store is the optimal path, the backstage order management system will send an instruction to the corresponding Wal-Mart store, and only the goods will be delivered in the same city, because the backstage detects that the Wal-Mart warehouse in the same city has goods, and the optimal path is the delivery in the same city.